The autonomic nervous system Flashcards
The surrounding white matter of the spinal cord is made of what?
Ascending and descending neuronal pathways
Motor neurones attach to which root nerve?
The ventral root nerve of the spinal cord
What occurs at the dorsal root nerve?
This is where sensory neurones attach
What is a ganglion?
A collection of neuronal cell bodies in the peripheral nervous system
Afferent neurones are also known as ……… neurones
Sensory
The brain and spinal cord collectively is known as?
The central nervous system
If the cell body is in the CNS the cell is said to be ……
Pre-synaptic
Where are the nerve fibres of the sympathetic nervous system found?
- All 12 thoracic segments
- The first 2 lumbar segments
Where are the nerve fibres from the parasympathetic nervous system based?
The cranium and sacrum
What are the names of the cranial nerves of the parasympathetic nervous system called? (4)
- Oculomotor
- Facial
- Glossopharangeal
- Vagus
In the parasympathetic nervous system the postganglionic fibres are long and unmyleinated. True or false
False. They are SHORT and unmyelinated
Tyrosine ->……. -> ……… -> Noradrenaline
DOPA -> Dopamine
Most of the nervous system is made of which cell type?
Glia
What is the role of glia?
To maintain homeostasis
What is the name of the two categories neuroglia is divisible in?
Macroglia and microglia
What is the role of astrocytes in the CNS?
To assist in the transfer of nutrients and waste products between neurone and blood
What is the role of oligodendrocytes in the central nervous system?
Myleination
What is the function of microglia in the CNS?
Immunity and inflammation
What is the role of satellite cells in the peripheral nervous system?
Physical support of the neurones
When unstained cell bodies of neurones appear what colour?
Grey
What is the purpose of nissl substance in the cell body of neurones?
Protein synthesis
What is the name of the membranous envelope that ensheaths a nerve fascicle?
Perineum
What is the function of epineurium?
It ensheaths the entire nerve and interfascicular bands that attach to adjacent nerve fascicle
What are the three layers of the meninges from outside to in?
- Dura mater
- Arachnoid mater
- Pia mater
What is the name of the membrane envelope continuous with the brain and spinal cord?
The meninges
Which two process take place ultimately when a neurone has its axon severed?
-Wallerian degeneration and wallerian regeneration
The grey matter of the spinal cords is made of ….. …… ……
Neuronal cell bodies
